./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0996d70f204c5713a65b04e25037e48d7532ec1ba0c10162e12c5c0d518b4e3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 21:56:14,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 21:56:14,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 21:56:14,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 21:56:14,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 21:56:14,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 21:56:14,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 21:56:14,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 21:56:14,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 21:56:14,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 21:56:14,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 21:56:14,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 21:56:14,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 21:56:14,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 21:56:14,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 21:56:14,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 21:56:14,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 21:56:14,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 21:56:14,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 21:56:14,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 21:56:14,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 21:56:14,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 21:56:14,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 21:56:14,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 21:56:14,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 21:56:14,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 21:56:14,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 21:56:14,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 21:56:14,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 21:56:14,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 21:56:14,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 21:56:14,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 21:56:14,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 21:56:14,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 21:56:14,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 21:56:14,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 21:56:14,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 21:56:14,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 21:56:14,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 21:56:14,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 21:56:14,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 21:56:14,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 21:56:14,817 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 21:56:14,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 21:56:14,819 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 21:56:14,819 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 21:56:14,819 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 21:56:14,820 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 21:56:14,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 21:56:14,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 21:56:14,821 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 21:56:14,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 21:56:14,821 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 21:56:14,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 21:56:14,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 21:56:14,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 21:56:14,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 21:56:14,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 21:56:14,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 21:56:14,823 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 21:56:14,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 21:56:14,823 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 21:56:14,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 21:56:14,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 21:56:14,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 21:56:14,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 21:56:14,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 21:56:14,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 21:56:14,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 21:56:14,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 21:56:14,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 21:56:14,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 21:56:14,825 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 21:56:14,825 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 21:56:14,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 21:56:14,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0996d70f204c5713a65b04e25037e48d7532ec1ba0c10162e12c5c0d518b4e3 [2021-12-27 21:56:15,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 21:56:15,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 21:56:15,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 21:56:15,131 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 21:56:15,132 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 21:56:15,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c [2021-12-27 21:56:15,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c37e56750/b4caf4c35fb94c438fbeca313dcafe52/FLAGc5ad28eda [2021-12-27 21:56:15,720 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 21:56:15,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c [2021-12-27 21:56:15,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c37e56750/b4caf4c35fb94c438fbeca313dcafe52/FLAGc5ad28eda [2021-12-27 21:56:15,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c37e56750/b4caf4c35fb94c438fbeca313dcafe52 [2021-12-27 21:56:15,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 21:56:15,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 21:56:15,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 21:56:15,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 21:56:15,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 21:56:15,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 09:56:15" (1/1) ... [2021-12-27 21:56:15,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408f7864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:15, skipping insertion in model container [2021-12-27 21:56:15,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 09:56:15" (1/1) ... [2021-12-27 21:56:15,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 21:56:16,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 21:56:16,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c[84645,84658] [2021-12-27 21:56:16,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 21:56:16,618 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 21:56:16,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c[84645,84658] [2021-12-27 21:56:16,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 21:56:16,847 INFO L208 MainTranslator]: Completed translation [2021-12-27 21:56:16,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:16 WrapperNode [2021-12-27 21:56:16,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 21:56:16,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 21:56:16,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 21:56:16,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 21:56:16,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:16" (1/1) ... [2021-12-27 21:56:16,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:16" (1/1) ... [2021-12-27 21:56:17,027 INFO L137 Inliner]: procedures = 127, calls = 1459, calls flagged for inlining = 20, calls inlined = 18, statements flattened = 3749 [2021-12-27 21:56:17,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 21:56:17,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 21:56:17,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 21:56:17,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 21:56:17,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:16" (1/1) ... [2021-12-27 21:56:17,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:16" (1/1) ... [2021-12-27 21:56:17,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:16" (1/1) ... [2021-12-27 21:56:17,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:16" (1/1) ... [2021-12-27 21:56:17,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:16" (1/1) ... [2021-12-27 21:56:17,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:16" (1/1) ... [2021-12-27 21:56:17,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:16" (1/1) ... [2021-12-27 21:56:17,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 21:56:17,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 21:56:17,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 21:56:17,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 21:56:17,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:16" (1/1) ... [2021-12-27 21:56:17,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 21:56:17,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:56:17,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-27 21:56:17,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-27 21:56:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-27 21:56:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-27 21:56:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-27 21:56:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-27 21:56:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2021-12-27 21:56:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2021-12-27 21:56:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSendToNextDriver [2021-12-27 21:56:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSendToNextDriver [2021-12-27 21:56:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-27 21:56:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-27 21:56:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfAddCounters [2021-12-27 21:56:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfAddCounters [2021-12-27 21:56:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-27 21:56:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-27 21:56:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2021-12-27 21:56:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2021-12-27 21:56:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2021-12-27 21:56:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2021-12-27 21:56:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-27 21:56:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-27 21:56:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-27 21:56:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-27 21:56:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-27 21:56:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-27 21:56:17,373 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-27 21:56:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-27 21:56:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 21:56:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure KeQuerySystemTime [2021-12-27 21:56:17,373 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQuerySystemTime [2021-12-27 21:56:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-27 21:56:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-27 21:56:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-12-27 21:56:17,374 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-12-27 21:56:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-27 21:56:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2021-12-27 21:56:17,374 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2021-12-27 21:56:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-27 21:56:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfLogError [2021-12-27 21:56:17,374 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfLogError [2021-12-27 21:56:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-27 21:56:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryPerformanceCounter [2021-12-27 21:56:17,375 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryPerformanceCounter [2021-12-27 21:56:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2021-12-27 21:56:17,375 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2021-12-27 21:56:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-27 21:56:17,375 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-27 21:56:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-12-27 21:56:17,375 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-12-27 21:56:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2021-12-27 21:56:17,376 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2021-12-27 21:56:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 21:56:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2021-12-27 21:56:17,376 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2021-12-27 21:56:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2021-12-27 21:56:17,376 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2021-12-27 21:56:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-27 21:56:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2021-12-27 21:56:17,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2021-12-27 21:56:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 21:56:17,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 21:56:17,895 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 21:56:17,896 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 21:56:18,072 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:18,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-27 21:56:18,091 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-27 21:56:18,164 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:18,177 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-27 21:56:18,177 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-27 21:56:18,500 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:18,516 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-27 21:56:18,516 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-27 21:56:18,583 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:18,584 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:18,587 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:57,637 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##61: assume false; [2021-12-27 21:56:57,637 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##62: assume !false; [2021-12-27 21:56:57,637 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##129: assume !false; [2021-12-27 21:56:57,637 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##128: assume false; [2021-12-27 21:56:57,637 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !false; [2021-12-27 21:56:57,637 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume false; [2021-12-27 21:56:57,646 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 21:56:57,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 21:56:57,660 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-27 21:56:57,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:56:57 BoogieIcfgContainer [2021-12-27 21:56:57,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 21:56:57,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 21:56:57,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 21:56:57,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 21:56:57,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 09:56:15" (1/3) ... [2021-12-27 21:56:57,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f990fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 09:56:57, skipping insertion in model container [2021-12-27 21:56:57,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:16" (2/3) ... [2021-12-27 21:56:57,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f990fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 09:56:57, skipping insertion in model container [2021-12-27 21:56:57,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:56:57" (3/3) ... [2021-12-27 21:56:57,670 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf.i.cil-1.c [2021-12-27 21:56:57,674 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 21:56:57,674 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 21:56:57,717 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 21:56:57,721 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-27 21:56:57,722 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 21:56:57,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 378 states, 274 states have (on average 1.4197080291970803) internal successors, (389), 292 states have internal predecessors, (389), 80 states have call successors, (80), 22 states have call predecessors, (80), 22 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2021-12-27 21:56:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-27 21:56:57,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:57,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:56:57,742 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:57,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:57,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2013573229, now seen corresponding path program 1 times [2021-12-27 21:56:57,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:57,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169433781] [2021-12-27 21:56:57,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:57,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:56:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:56:59,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:56:59,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169433781] [2021-12-27 21:56:59,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169433781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:56:59,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:56:59,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-27 21:56:59,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262420559] [2021-12-27 21:56:59,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:56:59,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-27 21:56:59,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:56:59,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-27 21:56:59,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 21:56:59,093 INFO L87 Difference]: Start difference. First operand has 378 states, 274 states have (on average 1.4197080291970803) internal successors, (389), 292 states have internal predecessors, (389), 80 states have call successors, (80), 22 states have call predecessors, (80), 22 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:56:59,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:56:59,164 INFO L93 Difference]: Finished difference Result 750 states and 1130 transitions. [2021-12-27 21:56:59,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-27 21:56:59,169 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-27 21:56:59,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:56:59,181 INFO L225 Difference]: With dead ends: 750 [2021-12-27 21:56:59,183 INFO L226 Difference]: Without dead ends: 371 [2021-12-27 21:56:59,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 21:56:59,191 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:56:59,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:56:59,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-12-27 21:56:59,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-12-27 21:56:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 269 states have (on average 1.3605947955390334) internal successors, (366), 285 states have internal predecessors, (366), 80 states have call successors, (80), 22 states have call predecessors, (80), 21 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-12-27 21:56:59,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 512 transitions. [2021-12-27 21:56:59,241 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 512 transitions. Word has length 17 [2021-12-27 21:56:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:56:59,242 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 512 transitions. [2021-12-27 21:56:59,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:56:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 512 transitions. [2021-12-27 21:56:59,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-27 21:56:59,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:59,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:56:59,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 21:56:59,243 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:59,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:59,244 INFO L85 PathProgramCache]: Analyzing trace with hash -6791183, now seen corresponding path program 1 times [2021-12-27 21:56:59,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:59,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576418430] [2021-12-27 21:56:59,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:59,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:57:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:57:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:57:00,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:57:00,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576418430] [2021-12-27 21:57:00,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576418430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:57:00,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:57:00,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-27 21:57:00,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659535588] [2021-12-27 21:57:00,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:57:00,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-27 21:57:00,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:57:00,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-27 21:57:00,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-27 21:57:00,385 INFO L87 Difference]: Start difference. First operand 371 states and 512 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:57:00,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:57:00,494 INFO L93 Difference]: Finished difference Result 744 states and 1027 transitions. [2021-12-27 21:57:00,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-27 21:57:00,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-27 21:57:00,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:57:00,497 INFO L225 Difference]: With dead ends: 744 [2021-12-27 21:57:00,497 INFO L226 Difference]: Without dead ends: 377 [2021-12-27 21:57:00,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-27 21:57:00,499 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 2 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 21:57:00,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1516 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 21:57:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-12-27 21:57:00,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 375. [2021-12-27 21:57:00,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 273 states have (on average 1.3553113553113554) internal successors, (370), 289 states have internal predecessors, (370), 80 states have call successors, (80), 22 states have call predecessors, (80), 21 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-12-27 21:57:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 516 transitions. [2021-12-27 21:57:00,518 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 516 transitions. Word has length 19 [2021-12-27 21:57:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:57:00,518 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 516 transitions. [2021-12-27 21:57:00,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:57:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 516 transitions. [2021-12-27 21:57:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-27 21:57:00,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:57:00,519 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:57:00,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-27 21:57:00,519 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:57:00,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:57:00,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1840508881, now seen corresponding path program 1 times [2021-12-27 21:57:00,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:57:00,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272311850] [2021-12-27 21:57:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:57:00,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:57:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:57:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-27 21:57:03,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:57:03,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272311850] [2021-12-27 21:57:03,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272311850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:57:03,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:57:03,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:57:03,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011895251] [2021-12-27 21:57:03,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:57:03,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:57:03,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:57:03,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:57:03,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:57:03,030 INFO L87 Difference]: Start difference. First operand 375 states and 516 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:57:03,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:57:03,196 INFO L93 Difference]: Finished difference Result 395 states and 542 transitions. [2021-12-27 21:57:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:57:03,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-27 21:57:03,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:57:03,198 INFO L225 Difference]: With dead ends: 395 [2021-12-27 21:57:03,198 INFO L226 Difference]: Without dead ends: 375 [2021-12-27 21:57:03,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:57:03,199 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 12 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 21:57:03,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 965 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 21:57:03,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-27 21:57:03,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-12-27 21:57:03,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 273 states have (on average 1.3516483516483517) internal successors, (369), 289 states have internal predecessors, (369), 80 states have call successors, (80), 22 states have call predecessors, (80), 21 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-12-27 21:57:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 515 transitions. [2021-12-27 21:57:03,212 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 515 transitions. Word has length 23 [2021-12-27 21:57:03,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:57:03,212 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 515 transitions. [2021-12-27 21:57:03,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:57:03,212 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 515 transitions. [2021-12-27 21:57:03,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-27 21:57:03,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:57:03,213 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:57:03,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-27 21:57:03,213 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:57:03,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:57:03,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2125296181, now seen corresponding path program 1 times [2021-12-27 21:57:03,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:57:03,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966976256] [2021-12-27 21:57:03,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:57:03,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:57:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:57:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-27 21:57:05,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:57:05,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966976256] [2021-12-27 21:57:05,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966976256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:57:05,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:57:05,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:57:05,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279923025] [2021-12-27 21:57:05,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:57:05,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:57:05,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:57:05,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:57:05,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:57:05,562 INFO L87 Difference]: Start difference. First operand 375 states and 515 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:57:07,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-27 21:57:07,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:57:07,889 INFO L93 Difference]: Finished difference Result 869 states and 1216 transitions. [2021-12-27 21:57:07,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:57:07,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-27 21:57:07,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:57:07,893 INFO L225 Difference]: With dead ends: 869 [2021-12-27 21:57:07,893 INFO L226 Difference]: Without dead ends: 614 [2021-12-27 21:57:07,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:57:07,895 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 431 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-27 21:57:07,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 1066 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 75 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-12-27 21:57:07,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-12-27 21:57:07,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 594. [2021-12-27 21:57:07,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 435 states have (on average 1.335632183908046) internal successors, (581), 445 states have internal predecessors, (581), 120 states have call successors, (120), 39 states have call predecessors, (120), 38 states have return successors, (129), 113 states have call predecessors, (129), 109 states have call successors, (129) [2021-12-27 21:57:07,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 830 transitions. [2021-12-27 21:57:07,913 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 830 transitions. Word has length 25 [2021-12-27 21:57:07,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:57:07,914 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 830 transitions. [2021-12-27 21:57:07,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:57:07,914 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 830 transitions. [2021-12-27 21:57:07,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-27 21:57:07,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:57:07,915 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:57:07,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-27 21:57:07,916 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:57:07,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:57:07,916 INFO L85 PathProgramCache]: Analyzing trace with hash -642930051, now seen corresponding path program 1 times [2021-12-27 21:57:07,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:57:07,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389343879] [2021-12-27 21:57:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:57:07,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:57:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:57:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-27 21:57:10,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:57:10,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389343879] [2021-12-27 21:57:10,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389343879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:57:10,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:57:10,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:57:10,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673517748] [2021-12-27 21:57:10,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:57:10,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:57:10,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:57:10,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:57:10,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:57:10,304 INFO L87 Difference]: Start difference. First operand 594 states and 830 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:57:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:57:10,411 INFO L93 Difference]: Finished difference Result 1408 states and 2008 transitions. [2021-12-27 21:57:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:57:10,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-27 21:57:10,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:57:10,417 INFO L225 Difference]: With dead ends: 1408 [2021-12-27 21:57:10,417 INFO L226 Difference]: Without dead ends: 945 [2021-12-27 21:57:10,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:57:10,419 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 421 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 21:57:10,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 924 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 21:57:10,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2021-12-27 21:57:10,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 915. [2021-12-27 21:57:10,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 663 states have (on average 1.3423831070889893) internal successors, (890), 674 states have internal predecessors, (890), 189 states have call successors, (189), 62 states have call predecessors, (189), 62 states have return successors, (223), 183 states have call predecessors, (223), 179 states have call successors, (223) [2021-12-27 21:57:10,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1302 transitions. [2021-12-27 21:57:10,444 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1302 transitions. Word has length 33 [2021-12-27 21:57:10,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:57:10,444 INFO L470 AbstractCegarLoop]: Abstraction has 915 states and 1302 transitions. [2021-12-27 21:57:10,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:57:10,445 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1302 transitions. [2021-12-27 21:57:10,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-27 21:57:10,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:57:10,446 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:57:10,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-27 21:57:10,446 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:57:10,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:57:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash 401969732, now seen corresponding path program 1 times [2021-12-27 21:57:10,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:57:10,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995628550] [2021-12-27 21:57:10,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:57:10,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:57:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:57:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-27 21:57:12,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:57:12,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995628550] [2021-12-27 21:57:12,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995628550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:57:12,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:57:12,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:57:12,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634047878] [2021-12-27 21:57:12,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:57:12,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:57:12,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:57:12,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:57:12,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:57:12,693 INFO L87 Difference]: Start difference. First operand 915 states and 1302 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:57:14,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-27 21:57:14,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:57:14,900 INFO L93 Difference]: Finished difference Result 929 states and 1321 transitions. [2021-12-27 21:57:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:57:14,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-27 21:57:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:57:14,904 INFO L225 Difference]: With dead ends: 929 [2021-12-27 21:57:14,904 INFO L226 Difference]: Without dead ends: 925 [2021-12-27 21:57:14,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:57:14,905 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 28 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-27 21:57:14,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 909 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-12-27 21:57:14,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2021-12-27 21:57:14,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 924. [2021-12-27 21:57:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 673 states have (on average 1.3417533432392272) internal successors, (903), 682 states have internal predecessors, (903), 188 states have call successors, (188), 63 states have call predecessors, (188), 62 states have return successors, (223), 183 states have call predecessors, (223), 179 states have call successors, (223) [2021-12-27 21:57:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1314 transitions. [2021-12-27 21:57:14,931 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1314 transitions. Word has length 33 [2021-12-27 21:57:14,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:57:14,931 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1314 transitions. [2021-12-27 21:57:14,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:57:14,931 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1314 transitions. [2021-12-27 21:57:14,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-27 21:57:14,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:57:14,933 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:57:14,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-27 21:57:14,933 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:57:14,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:57:14,933 INFO L85 PathProgramCache]: Analyzing trace with hash 937185154, now seen corresponding path program 1 times [2021-12-27 21:57:14,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:57:14,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954238044] [2021-12-27 21:57:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:57:14,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:57:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:57:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-27 21:57:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:57:17,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-27 21:57:17,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:57:17,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954238044] [2021-12-27 21:57:17,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954238044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:57:17,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:57:17,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-27 21:57:17,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217169452] [2021-12-27 21:57:17,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:57:17,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-27 21:57:17,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:57:17,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-27 21:57:17,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-27 21:57:17,309 INFO L87 Difference]: Start difference. First operand 924 states and 1314 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-27 21:57:19,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-27 21:57:21,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []